Question about Sony ECM-77 Professional Microphone

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Low Audio Level

Hi

I have a Sony ECM-77B microphone. But its level is low. How to solve this problem? Please kindly let me know. Thanks for help.
Mohan

Posted by mbista on

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2 Answers

Anonymous

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If you have low audio, the transformer is cooked. This happens alot if you drop the mic. You can send it to me and have it fixed for $70 plus shipping, or contact your local audio dude. [email protected]

Posted on Jun 09, 2010

  • Anonymous Jun 09, 2010

    bad transformer. A $10 part at most electronic stores. U fried it when you dropped it. Happens all the time.


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Jerry Greenberg

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I found this happens with a bad capsule.

On the end of the wire you have the microphone capsule. If I remember correctly, the capsule can be unscrewed from the microphone amplifier case assembly. This part can be ordered from a supplier for Sony professional parts.

I have also had the wire go defective, and need replacement. With most of these models, the complete capsule assembly has to be replaced along with the new wire.

If you are not used to servicing this type of microphone, Sony has service reps that can service and test the microphone for you.

Jerry G.

Posted on Aug 10, 2008

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The battery may be getting weak. Also, this is a low impedance microphone. If you have it plugged into a high impedance device the signal will appear weak. If this is the case you might try getting a matching transformer. They are usually available from any decent musical instrument store or electronic supply.

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Battery change


The battery is housed in the xlr adaptor DC-78. You may need to unscrew the barrell about the outside of it to replace the batt.


Or alternatively use phantom power to run up the mic(this is easiest

. Be sure to connect it to a channel that is phantom power optioned

Here is the spec sheets for it with details of the adaptor you need and battery type required.

http://bssc.sel.sony.com/BroadcastandBusiness/docs/brochures/ecm44b%20brochure.pdf

Good luck

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